vmscan: print shrink_slab symbol name on negative shrinker objects

[safe/jmp/linux-2.6] / mm / internal.h

diff --git a/mm/internal.h b/mm/internal.h
index 1cfbf2e..987bb03 100644 (file)
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -17,6 +17,7 @@ void free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *start_vma,
                unsigned long floor, unsigned long ceiling);
 
 extern void prep_compound_page(struct page *page, unsigned long order);
+extern void prep_compound_gigantic_page(struct page *page, unsigned long order);
 
 static inline void set_page_count(struct page *page, int v)
 {
@@ -48,6 +49,7 @@ extern void putback_lru_page(struct page *page);
 /*
  * in mm/page_alloc.c
  */
+extern unsigned long highest_memmap_pfn;
 extern void __free_pages_bootmem(struct page *page, unsigned int order);
 
 /*
@@ -61,6 +63,7 @@ static inline unsigned long page_order(struct page *page)
        return page_private(page);
 }
 
+#ifdef CONFIG_HAVE_MLOCK
 extern long mlock_vma_pages_range(struct vm_area_struct *vma,
                        unsigned long start, unsigned long end);
 extern void munlock_vma_pages_range(struct vm_area_struct *vma,
@@ -69,6 +72,7 @@ static inline void munlock_vma_pages_all(struct vm_area_struct *vma)
 {
        munlock_vma_pages_range(vma, vma->vm_start, vma->vm_end);
 }
+#endif
 
 #ifdef CONFIG_UNEVICTABLE_LRU
 /*
@@ -88,7 +92,7 @@ static inline void unevictable_migrate_page(struct page *new, struct page *old)
 }
 #endif
 
-#ifdef CONFIG_UNEVICTABLE_LRU
+#ifdef CONFIG_HAVE_MLOCKED_PAGE_BIT
 /*
  * Called only in fault path via page_evictable() for a new page
  * to determine if it's being mapped into a LOCKED vma.
@@ -146,8 +150,24 @@ static inline void mlock_migrate_page(struct page *newpage, struct page *page)
        }
 }
 
+/*
+ * free_page_mlock() -- clean up attempts to free and mlocked() page.
+ * Page should not be on lru, so no need to fix that up.
+ * free_pages_check() will verify...
+ */
+static inline void free_page_mlock(struct page *page)
+{
+       if (unlikely(TestClearPageMlocked(page))) {
+               unsigned long flags;
+
+               local_irq_save(flags);
+               __dec_zone_page_state(page, NR_MLOCK);
+               __count_vm_event(UNEVICTABLE_MLOCKFREED);
+               local_irq_restore(flags);
+       }
+}
 
-#else /* CONFIG_UNEVICTABLE_LRU */
+#else /* CONFIG_HAVE_MLOCKED_PAGE_BIT */
 static inline int is_mlocked_vma(struct vm_area_struct *v, struct page *p)
 {
        return 0;
@@ -155,8 +175,37 @@ static inline int is_mlocked_vma(struct vm_area_struct *v, struct page *p)
 static inline void clear_page_mlock(struct page *page) { }
 static inline void mlock_vma_page(struct page *page) { }
 static inline void mlock_migrate_page(struct page *new, struct page *old) { }
+static inline void free_page_mlock(struct page *page) { }
 
-#endif /* CONFIG_UNEVICTABLE_LRU */
+#endif /* CONFIG_HAVE_MLOCKED_PAGE_BIT */
+
+/*
+ * Return the mem_map entry representing the 'offset' subpage within
+ * the maximally aligned gigantic page 'base'.  Handle any discontiguity
+ * in the mem_map at MAX_ORDER_NR_PAGES boundaries.
+ */
+static inline struct page *mem_map_offset(struct page *base, int offset)
+{
+       if (unlikely(offset >= MAX_ORDER_NR_PAGES))
+               return pfn_to_page(page_to_pfn(base) + offset);
+       return base + offset;
+}
+
+/*
+ * Iterator over all subpages withing the maximally aligned gigantic
+ * page 'base'.  Handle any discontiguity in the mem_map.
+ */
+static inline struct page *mem_map_next(struct page *iter,
+                                               struct page *base, int offset)
+{
+       if (unlikely((offset & (MAX_ORDER_NR_PAGES - 1)) == 0)) {
+               unsigned long pfn = page_to_pfn(base) + offset;
+               if (!pfn_valid(pfn))
+                       return NULL;
+               return pfn_to_page(pfn);
+       }
+       return iter + 1;
+}
 
 /*
  * FLATMEM and DISCONTIGMEM configurations use alloc_bootmem_node,
@@ -229,6 +278,7 @@ static inline void mminit_validate_memmodel_limits(unsigned long *start_pfn,
 #define GUP_FLAGS_WRITE                  0x1
 #define GUP_FLAGS_FORCE                  0x2
 #define GUP_FLAGS_IGNORE_VMA_PERMISSIONS 0x4
+#define GUP_FLAGS_IGNORE_SIGKILL         0x8
 
 int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                     unsigned long start, int len, int flags,